Mold-loading device.



2 SHEETS-MEET l.

E. MCCAULEY.

MOLD LOADING DEVICE.

APPLICATION FILED AUG.28. ISI?.

Patented Oct. 8, I918` ATTORNEYS iran sauras rafrnnr onirica.

ROBERT MUCAULEY, 0F PITTSBURGH, PENNSYLVANIA.

-MOLD-LOADING DEVICE.

To all whom t may. concern.'

Beit known that I, ROBERT E. MCCAULEY, a citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and Improved Mold-Loading Device, ofwhich the following is a full, clear, and exact description.

This invention relates to a device for loading glass molds and has for an object the provlsion of an improved construction for quickly and easily `supplying the properl when the device is positively operated.

A further 'object of the invention is' toyr 'provide a tubular discharge .nozzlenormally extending above the level of the glass and means for intermittently reducing the presl Vsure above the discharge nozzle vin vcompari- `son' to the pressure in the tank and feeding extension. 4

A still further object of the invention is to provide a removable extension,- for a glass tank or container and .an adjustable tubular discharge andregulatingmember.

In the 'accompanying drawings:

` Figure' 1- is a'longitudinal fragmentary section through part of a glass tank or container," an vextension secured thereto, a feeding -mechanism arranged on the extension, said extension and feeding mechanism disclosing an embodiment of the invention.

Y Fig. 2 is a section through Fig.` 1 on y l Fig. 3 isa detail fragmentary side view (if the upper part of the structure shown in 1g. 2.

Fig. 4 is an enlarged detail sectional view fthrough a relief valve embodying certain features ofthe invention. l Y

Referring to the accompanying drawings by numerals, 1 indicates the ymain tank to which a removable extension 2 is secured, i said extension being made from fire brick lor any suitable material and supported by metal plates 3, 4 and 5, said plates' being in turn supported by yhaving one end of the plate 3 supported by bricks 6, and the opposite end supported by the rods 7, which rods arey in turn properly supported by the guide rods 8, secured in any suitable man- Specification of Letters Patent.

Applicationled August 28, 1917. Serial No. 188,628.

Patented oet. s, isis.

ner to the reinforcing `embracing bars 9 of the main tank 1. The extension 2 may` be applied or removed at any time, even when the tank is in operation, by providing a brick 10 temporarily in the opening 11. This brick is removedl by tongs or other suitable means through an opening provided by removing a brick 12 in the extension 2, said brick 12 being replaced after the brick 10 has been removed. Inusing the device the glass 13 is preferably maintained on a `level with thel line 14 so as to be continuously slightly below the upper edge 15 of the nozzle 16. The nozzle 16 is removablyheld in place by clamping members 17 and is arranged with a tapering upper end 18 whereby when; the tubular feed member 19 is lowered for its fullfextent no glass will flow into the nozzle'l. The tubular feed lmember 19 is slidinglyftted yin the lupper position shown in Fig. 1, though the same4 maybe raised or lowered according to the different circumstances, and as different quantities 0f -glass are required. This upward and downward movement is caused by a yoke lever 20 as shown in Fig. 2, jour-1 naled at 21 inthe upper plate 4, (Fig. 2), so

v-that-as the lever 1s swung on its pivot' the feeding member will be raised or lowered. Brackets 22\arer secured to the ytop'plate 223 of the feeding tube 19, and said brackets are provided with pins 24 fitted into slots 25 inthe forked end of the lever 20, as

shown in Fig. 3. A grip portion26 of the cured preferably to the top plate 4. When it is desired ,to shift the position of the feed member 19 catch 27 v is disengaged and the lever 20 is moved pivota1ly'up. wardly or downwardly as the case may be, and the catch -27 engaged to hold the feed member at the desired height. This vadiustment may be made at any time, even during the operatingof the device.A The tubular feed member 19 is made from fire brick and is flared at 29, said Hare accommodating @sealing plug 30 on the! inner face and a clamping arrangement on' the outer face, a plurality of bolts 32 causing the ring 31 to clamp the flare 29 andat the same time` clamp the top plate 23 in position, said top plate in turn holding the sealing plate 30 in position.` If desired lever V21 is provided with a spring pressed catch 27 engaging the rack 28 which is vsepacking, fire clay or other suitable means could be used for making'the parts tight and more or less heat proof. The sealing cap is provided with apertures l33 and 34, said a ertures registering withpipes' and 36, pipe 35 being connected to a source of compressed air 'through valve 37, while pipe 36 is connected to a suction pump through valve 38. These valves are operated by a pivotally mounted arm 39, said arm being urged in one direction by a spring 40 and caused to move in the opposite direction by a cam 41, said cam being timed Ato move with the turn-table 42,'so as to shift the molds 43 automatically with the action of theL suction. In connection with the compressed air through pipe 35, it may be noted that the compressed airmay be heated or if desired the compressed air could be eliminated and onl sulicientair admitted toreduce the rare action of the air in the tube 19. The vacuum relief valve 44 is inclosed inr -the pipe 36, said valve being` constructed in any suitable manner, as for instance accordi ing to the valve shown in Fig-L4, wherein the movable valve member 45 normally rests on the seat 46 under the action of spring 47. When the suction -becomes too great the valve 45 will -move away from its seat vso as todestroy or reduce the rarefaction. lf too great a. rarefaction is provided vin the tubular feed member 19 the glass would be drawn up to the .to ofthe feed member and in some instances into the pipes4 35 and 36, so that in order to positively prevent this the vacuum relief valve 44 is always set to limit the amount of rarefaction.

In yoperation when the parts are in the position shown in Fig-2' and the glass is in 4.0

a liquid state the table 42 and valve 41 and associate parts are in such a position as Y' to open valve 38 whereupon a rarefactionof tion may which will cause the lass to'ilow upwardly the air in the feed tube-19 will take place. ln starting the device the discharge orifice" or' passageway 48 of the nozzle 16 must be closed until sufficient plastic glass has iowed. into the passageway 48 to. form a closure er seal. There remains at all times dliringthe continual intermittent operation of the de- .vice suiiicient glass tg form this seal. After this seal has beenv formed the orifice is un-- covered and ifldesired a vrarefaction or sucbe caused in thefeed member 19 tov substantially the otted line 49 tand as soon as this occurs cam 41 moves beneath the lever '39, This will cut olf the suction and allow vif desired, a certain quantity of air to V-'enter whereupon thel glass will move down lwardly through the discharge ,orice- 48;

It is oi 'course understood that the lever. 39` could Abeoperated manually as well as lautomatically. Alfter thedevice. has lbeen 'started the cam 41 automatically Jopens the suction valve at thefproper time fordrawing up-a and then downwardly through the nozzle.

quantity of move down 48. The cam 41 is timed -so as to open the A valve 38 with a suction substantially at the time the glass is cut-oli' below 'the orifice. This will cause the glass, although extending below lthe orifice, tdbe drawn or'sucked up into the upperpart of the nozzle 16, or enlass and allowing the same to hy gravity'through the orificev tirely into the feeding member 19. This will maintain the outiiowin glass in the proper liquid state, and wil prevent any undue or undesirable chilling. In case the operator instantly stops the machine, orthef machine is stoppedfor any purpose only a limited 'quantity of glass will low outf namely partof the quantity that has been previously drawn into Fa point above line 15` of the discharge nozzle 16. After this glass 'l 'has 'been discharged no additional glass will be discharged by reason vof the fact thatv the upper end ofthe nozzle 16 is above the; level of glass 13. This is also an advantage in that it does not require the plugging up of the orifice 48 when the machine is stopped.- Tt will be evident that the nozzle`16 may be renewed at any time and that the same `may be made of any desired lengthjsoas to'take l care of any depth of glass.

What I claim is: l

1. In a glass molding machine of -the .character described, a supply tank, a tubular feeding and regulating member, means :for producing ararefaction therein, and a discharge nozzle arranged in line with said l.

tubularA feed member and projectn te a point above the upper surface of the g ass in said tank." i

2. A vmolding device comprising a discharge nozzle, means glass so as to surround saidl nozzle, and means utilizing'v diierence in air -pressure for causing the lass to iow intermittentlyA for guidingv molten upwardly overt e outside of said nozzle guiding molten glass'to the discharge vsaid discharge nozzle projecting iis and means -or intermittently rarefying the' airin-said tubular member.

.4. Tn -a mold 'loading deviceof the char'- acter described in combination with al supply nozzleextending through the bottom of said extension to a point above the'iipper level ofthe glass therein', a tubular member -arranged in axial alinement with said nozzle tank, an'iextension fitted thereon, a dischar e i and 'of a-.sizejt'o telescope thereover, means A n for adjustin the position ofsaid tubularmember axia ly so that the llower end there.-

of may be positioned at any 'desired point described in combinationwith a supply member having a certain level of glass arranged therein, a. nozzle extending through the bottom of said supply member and upward to a point above the upper level of said glass, and means for intermittently causing the glass to move upward and then downward into and through said nozzle.

6. In a mold loading device of the character described the combination with a glass supply member having a predetermined level of molten glass therein, vof a nozzle extending upwardly through the bottom of said supply member to a point above the level of glass therein, said nozzle having an aperture through which the glass flows when the device is in operation, and means forcausing an intermittent flow of .glass through said nozzle.

7. In a mold loading device of the character described the combination with a supply member provided with an aperture in the bottom, of a nozzle connected with the bottom and extending to a point suliciently above the bottom to be above the upper surface ofthe glass in said supply member, said nozzle directing the glass through said aperture and tubular member arranged above said nozzle when positioned with the lower end submerged in said glass, and means for producing an intermittent rarefaction in said tubular member for intermittently drawing up a quantity of glass above said nozzle and then allowing the glass to fall by gravity into and through the nozzle.

8. "A mold loading device of the character described comprising a supply member having an aperture therein, an adjustable tubular'member arranged in line with and above said aperture, said tubular member having a flaring upper end, a ring fitted. around the upper surface of said flaring upper end and conforming to the shape thereof, a plate fitted across said upper end, bolts for secun` ing sald ring and said late and at the same time clamping the said tubular member to said plate, means acting on said plate for raising or lowering said tubular member, and means for providing intermittent rarefaction in said tubular member.

A9.9i mold loading device for molten glass comprising a supply member having an aperture therein, a nozzle projecting upwardly through said aperture, a tubular member spaced permanently above and in line with the aperture, means for supplying suction to said tubular member for producing a vacuum therein for drawing glass to a point above said nozzle, and a vacuum relief valve for relieving the rarefaction in the tubular member, whereby the glass drawn into said tubular member may flow downwardlyV through said nozzle.`

10. A mold loading device of the character described comprising a supply member having an aperture therein, a nozzle tted into said aperture and extending a suiicient distance above the bottom of the supply member to cause the upper edge thereof to be above the surface of the glass in the supply member, a tubular member capable of telescoping around the nozzle and arranged abovepthe nozzle, means for moving said tubular member toward and from said nozzle, and means for intermittently producing a rarefaction in said tubular member.

11. A mold loading device of the characnearthev lower end of the taper, means for adjusting the position of said tubular member toward and from said nozzle whereby the space between the tubular member and nozzle is varied for controlling the liow of glass into the tubular member. and from thence into the nozzle, and means for intermittently rarefying the air in said tubular member.

RGBERT E. MCCAULEY. 

